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5 Reasons to Hire Professional Insulation Contractors in Toronto

September 29, 2017

When a home is not energy efficient, it’s wasting energy and wasting money. On the other hand, when a home is well insulated and energy efficient, energy consumption is reduced, and annual utility costs (for heating and cooling) are decreased. Homeowners shopping for a professional insulation contractor in Toronto can benefit from a number of energy upgrades. Best of all, the results are measurable: energy efficiency is enhanced throughout the home; heating and cooling costs are dramatically reduced; and home comfort is improved from bedrooms to basement.

1.  Expert inspection and assessment of the home

professional insulation contractors torontoBefore even insulating, it’s wise to assess a home’s energy efficiency by identifying weaknesses in the building envelope. This can be done with a “blower door test”, which pinpoints deficiencies, particularly with respect to energy efficiency. The test also identifies remedies and retrofits that would improve the situation. With a good insulation contractor in Toronto, cost-effective “fixes” can be recommended - everything from weatherizing, to air sealing, to insulation, to ventilation.

2.  Determining the need for insulation removal

Attic or basement, it’s important to determine whether existing insulation requires removal. Here, hiring a professional insulation contractor in Toronto can be valuable, mainly for the expert assessment of existing conditions. In fact, there are cases where existing insulation might only need “topping up” and sealing air leaks may be the only “fix” required. Where insulation is damaged or deteriorated, removal may be necessary – work that should be left to professionals.

3.  Various insulation products to choose from

For optimal energy efficiency, a space should be effectively sealed, well insulated, and properly ventilated. With a professional insulation contractor in Toronto, homeowners are assured of a job that is done right from end to end. Professionals can recommend the best insulation product for the job, and the most effective installation approach. This might include spray foam insulation or blown in insulation, but whatever the product, air sealing and air ventilation must be considered.

4.  Insulating exterior walls for better comfort

Where recommended, exterior walls can be insulated to increase R-Value and dramatically boost energy efficiency. Well-insulated walls prevent heat from escaping in winter, and prevent cool air from escaping in summer. And with a professional insulation contractor in Toronto, there are some innovative approaches (drill-and-fill) that are very effective, and with excellent outcomes. Using blown in insulation, the wall cavities are thermally insulated in a cost-effective installation.

5.  Insulating basements for energy efficiency

Basements require airflow control and moisture control to ensure the best energy efficiency. This is where spray foam insulation can be most effective. The entire space is sealed tight; moisture is prevented from collecting; and higher-than-average R-Values are assured. With a well-insulated basement, energy efficiency affects the entire home, with improved indoor comfort, reduced utility costs (for heating and cooling), and cost savings that can offset the original investment.

To learn more about home insulation, call the insulation professionals at Great Northern Insulation (1-800-265-1914) or visit the company website at www.gni.ca .

Western Ontario

935 Keyes Drive
Woodstock, Ontario
Canada N4V 1C3

Phone: 1-800-265-1914

Fax: (519) 539-7946
TOLL FREE: 1-800-265-1914

Southwestern Ontario

7035 Industrial Drive
Comber, Ontario
Canada N0P 1J0

TOLL FREE: 1-800-265-1914

Muskoka, Haliburton, Northern Ontario

1027 Elwell Park Road
Gravenhurst, Ontario
Canada P1P 1R1

TOLL FREE: 1-800-265-1914

Central Ontario

29 Ferndale Industrial Drive
Barrie, Ontario
Canada L4N 9V5

TOLL FREE: 1-800-265-1914

GTA East

103 North Port Road
Port Perry, Ontario
Canada L9L 1B2

TOLL FREE: 1-800-265-1914

GTA & South Central Ontario

450 Industrial Dr,
Toronto (Milton), Ontario
Canada L9T 5A6

TOLL FREE: 1-800-265-1914

Eastern Ontario

1035 Moodie Dr #1,
Nepean, ON
K2R 1H4

TOLL FREE: 1-800-265-1914


259 Campbell Street
Sarnia Ontario
Canada, N7T 2H3

TOLL FREE: 1-800-265-1914

Niagara Region

6260 Don Murie St
Niagara Falls, ON
L2G 0B4

TOLL FREE: 1-800-265-1914


Great Northern Insulation - Better Business Bureau Profile.


Best of 2017

From reputation to responsiveness, HomeStars consistently ranks Great Northern Insulation at better than 95% for customer satisfaction. Thanks to everyone for the great ratings! 

HomeStars 2018

Best of 2018

For the second year in a row, HomeStars consistently ranks Great Northern Insulation at better than 95% for customer satisfaction. Thank you again to everyone!

Homestars Best of 2019 Award

Best of 2019

For the third year in a row, HomeStars ranked Great Northern Insulation at better than 95% for customer satisfaction.

Homestars Best of 2020 Award

Best of 2020

For four years now, HomeStars has ranked Great Northern Insulation at better than 95% for customer satisfaction.

Homestars Best of 2021 Award

Best of 2021

HomeStars has ranked Great Northern Insulation as a company that goes above and beyond in every aspect of business for the year of 2021.

Homestars Best of 2022 Award

Best of 2022

HomeStars has ranked Great Northern Insulation as a company that goes above and beyond in every aspect of business for the year of 2022.


GNI is the Authorized & Trusted Insulation and Air Sealing Installer for Lowe’s

Enenrgy Savers

Energy Saving

Energy saving and energy efficiency is easier than one might think. Great Northern Insulation helps to identify performance issues, while taking advantage of improvement opportunities.

100% Canadian

100% Canadian

Great Northern Insulation is recognized as Canada's largest full-service insulation contractor. GNI is 100% Canadian owned, proudly serving Ontario customers since 1980.

Foam Masters

Do it right the first time
- with foam mastersTM

WALLTITE® ECO™ is a high-performance system, professionally installed by certified and approved specialists. Its C.C.M.C. approved (Canadian Construction Materials Centre) - with product quality guaranteed - and with installation by highly trained experts with the technical know-how to do the job right, the first time.

Insulthane Extreme

Insulthane® Extreme

For the ultimate in high performance spray foam insulation, Insulthane® Extreme is the professional choice for residential, commercial, and industrial application. With improved thermal performance over other products, Insulthane® Extreme has an exceptionally low Global Warming Potential (GWP). Considered environmentally friendly, this next generation spray foam insulation is non-ozone depleting, and exceeds specifications of other HFC product alternatives.


3MTM products.
Quality + Performance = Savings

3MTM energy-saving products are designed to keep warm air in, and cold air out, while keeping energy bills down. Products optimize energy efficiency in buildings and homes; improve indoor environment for occupants; and effect the reduction of seasonal energy costs. 3M products are authorized for LEED credits (Leadership in Energy/Environmental Design).


Baeumler ApprovedTM
Professional, Certified and Insured

Baeumler ApprovedTM gives you peace of mind when connecting with contractors, trades and home service providers. All Baeumler Approved members have demonstrated high quality work for customers and other trade professionals. Members must also have Workers Compensation, liability insurance of at least $1,000,000 and prove professional certification.

Holmes and Holmes

Holmes and Holmes


Mike Holmes and his son Mike Jr. (MJ) convert MJ’s bachelor bungalow into a two-storey home for MJ and his girlfriend Lisa. Choosing the newest materials and build techniques, the father and son team follow Mike’s famous motto – “Make it right.” The show can be watched on HGTV and DIY Network.


Enbridge Incentives

The Energy Conservation Program provides incentives of up to $1,600 to customers who achieve energy efficiency and fuel savings – and Great Northern Insulation can pave the way.


Great Northern Insulation proudly abides by a renovation-specific Code of Conduct set by RenoMark™.


We are Verified & Bonded by eRenovate. When you choose to proceed with our services through their platform, you receive the gaurantees set forth through their program.

As Seen on Love It or List It

The GNI crew have been featured installing insulation on Love It or List It - have you seen our logo in an episode?

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